Journal
PHYSICAL REVIEW C
Volume 105, Issue 1, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.105.014915
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Funding
- JSPS [JP21H00121, JP21H00125, JP19H05150, JP19H05151, JP19H01898, JP19K03879, JP18H05236, JP18H05407, JP16H03995, JP16K17694]
- Yukawa International Program for Quark-hadron Sciences (YIPQS)
- by a priority issue (Elucidation of the fundamental laws and evolution of the universe) to be tackled by using Post K Computer, by Program for Promoting Researches on the Supercomputer Fugaku (Simulation for basic science: from fundamental laws of part
- Joint Institute for Computational Fundamental Science (JIC-FuS)
- National Natural Science Foundation of China (NSFC) [11835015, 12047503]
- NSFC
- NSFC [12070131001]
- Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) [TRR110, 196253076]
- Chinese Academy of Sciences (CAS) [XDB34030000, QYZDB-SSW-SYS013]
- CAS President's International Fellowship Initiative (PIFI) [2020PM0020]
- China Postdoctoral Science Foundation [2020M680687]
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Investigation of momentum correlation functions of S = -2 baryon pairs in high-energy collisions shows that the NΞ (ΛΛ) interaction is moderately (weakly) attractive, without forming a quasi-bound (bound) state.
The momentum correlation functions of S = -2 baryon pairs (p Xi(-) and Lambda Lambda) produced in high-energy pp and pA collisions are investigated on the basis of the coupled-channels formalism. The strong interaction is described by the coupled-channels HAL QCD potential obtained by lattice QCD simulations near physical quark masses, while the hadronic source function is taken to be a static Gaussian form. The coupled-channels effect, the threshold difference, the realistic strong interaction, and the Coulomb interaction are fully taken into account for the first time in the femtoscopic analysis of baryon-baryon correlations. The characteristic features of the experimental data for the p Xi(-) and Lambda Lambda pairs at the Large Hadron Collider are reproduced quantitatively with a suitable choice of nonfemtoscopic parameters and the source size. The agreement between theory and experiment indicates that the N Xi (Lambda Lambda) interaction is moderately (weakly) attractive without having a quasibound (bound) state.
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